High severity · published Mar 27, 2026
CVE-2026-32678
Authentication bypass issue exists in BUFFALO Wi-Fi router products, which may allow an attacker to alter critical configuration settings without authentication
7.5
CVSS
0.4%
EPSS
No
On KEV
Description
Authentication bypass issue exists in BUFFALO Wi-Fi router products, which may allow an attacker to alter critical configuration settings without authentication.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BW
BUFFALO Wi-Fi router products · BUFFALO INC.
See "References" section · source: vendor
FF
Fs-m1266 Firmware · Buffalo
before 4.13 · source: NVD
FF
Fs-s1266 Firmware · Buffalo
before 4.13 · source: NVD
VF
Vr-u300w Firmware · Buffalo
before 1.42 · source: NVD
VF
Vr-u500x Firmware · Buffalo
before 1.42 · source: NVD
WF
Wapm-1266r Firmware · Buffalo
before 1.42 · source: NVD
WF
Wapm-1266wdpr Firmware · Buffalo
before 1.42 · source: NVD
WF
Wapm-1266wdpra Firmware · Buffalo
before 1.42 · source: NVD
WF
Wapm-1750d Firmware · Buffalo
before 1.07 · source: NVD
WF
Wapm-2133r Firmware · Buffalo
before 1.42 · source: NVD
WF
Wapm-2133tr Firmware · Buffalo
before 1.42 · source: NVD
WF
Wapm-ax4r Firmware · Buffalo
before 1.42 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-32678
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-32678
Third Party Advisory
https://jvn.jp/en/jp/JVN83788689/
Vendor Advisory
https://www.buffalo.jp/news/detail/20260323-01.html
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